Telephone jack



Aug. 11, 1925. 1,549,308

h M. HlRscH TELEPHONE JACK Filed Nov. 21. 1924 3mm/dow MaxHz'n-sc/L wat r 9L t I Grimma:

Patented Aug. 11, 1925.

UNITED STATES PATENT OFFICE.

MAX HIRSCH, OF BROOKLYN, NEW YORK, ASSIGNOR TO BROOKLYN METAL STAMPING- CORPORATION, OF BROOKLYN, NEW YORK.

TELEPHONE JACK.

Appiieatidn filed November 21, 1924. serial No. 751,335.

T 0 all whom t may concern.'

Be it known that MAX HrnsoH, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, has invented certain new and useful Improvements in Telephone Jacks, of which the following is aspecification.

lThis invention relates to new and useful v improvements in telephone jacks and more particularly to a spring jack for use in connection with radio receiving apparatus, the primary object of the invention being to provide an improved device of this character in which the spring members are provided with improved terminal ends.

A vfurther object of the invention resides in providing a spring jack in which the terminal ends of the spring elements are designed in the form of a fantail, so that in assembling the apparatus free and ready access may be had in order to secure the circuit wires to the terminal ends.

Still another object of the invention resides in providing the terminal ends of the spring contacts with cupped-shaped portions to more readily enable the circuit wires to be quickly and securely fastened thereto.

A still further object resides in providing a device which is simple and durable in con- Y struction, inexpensive to manufacture, and

one which will be very efficient and useful in operation.

With theseand other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claims.

In the accompanying drawing forming a part of this application,-`

Figure l is a plan view of a spring jack embodying my invention, a panel being shown in section, the jack being of a construction for use in connection with a double closed filament control circuit;

Figure 2 is a front elevation of the same;

Figure 3 is a side elevation thereof, the panel being shown in section;

Figure 4 is a perspective view of one of the spring contacts removed;

Figure 5 is a fragmentary plan view of a slightly modified form of the invention in which only two spring contacts are disclosed for .use in a single circuit'apparatus; and

Figure 6 is a front elevation of a still further modified form of the invention in which four spring contact members are illus` trated for use in a double circuit apparatus.

ln describing the invention I shall refer to the drawing in which similar reference characters designate corresponding parts throughout the several views, and in which designates a panel of the usual or any preferred type, such as is used in connection with radio receiving apparatus, in which is provided an opening 2 in which the telephone jack is adapted to be supported.

rlhe jack proper consists of a frame 3, one end of which'is bent angularly and provided with a threaded opening which receives therein the threaded reduced end of a sleeve member 4. This sleeve member passes through the opening in the panel 1, as shown in Fig. 1 of the drawing, and is held in place by washers 5 applied to the sleeve on opposite faces of the panel. It is obvious from the construction shown that the frame 8 may be held securely to the inner face of the panel.

In Figs. l, 2 and 3 of the drawing, I have shown an embodiment of my invention adapted for use in what is known as the double closed filament control circuit, and in this form of the invention six contact spring members are provided, being numbered respectively, 6, 7, 8, 9, 10 and 11. These spring contact members are held in spaced relation with respect to one another by means of the insulated elements 12 applied to the posts 13, the latter being secured in openings (not shown) in the base portion of the jack frame 3. These contact springs are connected together in pairs, the same being accomplished by the provision of anvil contacts 14 applied to the spring members 7, 9 and 10 respectively, as shown in Fig. 3 of the drawing. The forward ends of the contact springs 8 and 1l are bent in V-shaped fashion as shown at 15, to extend across and adjacent the passageway leading from the sleeve 4, so that when the plug is inserted in the latter the same will cont-act therewith, as is customary in such devices. The forward end of the spring 6 is conneet-ed to the forward end of the .spring 8 by means of a contact member 16 so that the circuit may be properly completed when the plug contacts with the ends 15 aforementioned.

One of the principal objects of my invention,V as stated heretofore, is to lprovide a fantail end to the jack. In carrying out this object, the inner terminal ends of the contact springs are stamped in a particular fashion. For instance, thetop-niost spring member 6 is stamped so that the inner terminal endis curved outivardlyto one side of the adjacent side edge thereof. The next spring member 7 is stamped so that the terminal end is directed to the opposite side of Y the longitudinal centerV thereof, yet its side edge isy in longitudinal alignment With the sideedgeA of the spring proper. The third spring element 8 is stamped so that its termina] end is bent to one side of the adjacent side edge of the spring element and in a direction opposite to that of the end of the element 6.V The fourth spring element 9 is designedA similar tothe element 7. The fifth spring element 10 is ysimilar to spring element 7 except that it is directed to the op posite side of the longitudinal center of the device and the loiveimost spring element 11 is identical y in design with the spring ele ment 6, being in vertical alignment there- With.

By so designing the ends of the'spring elements, the same, are spread apart in a fashion'to enable? the builder of the appara,- tus to.readily apply his t-ools andV fingers thereto in connecting the circuit Wires with these terminal ends. Considerable difficulty has been encountered in the useof a Vspring jack in which a number of spring elements are used, because it is usual to raise the terminai ends in vertical alignment. The advantage of such an apparatus as I have slioivn and described Will appear obvious to all those experienced in this art. y

To further facilitate'the engagement of the circuitivires with the. terminal ends of the spring elements.` the inner terminal ends of the spring elements vG to 11 inclusive, are provided With integral lateral lugs which are curved upwardly to form cuppedshaped members 17 thereon. Thus it ivill only be necessary to place the ends of the circuit ivii'rs in these cupped-shaped members 17 and apply solder over ti e cupped portions. The cupped portions Will receive the Wire and the solder and quickly secure the circuit Wires to these contact springs. The liabilities of disconnecting the circuit Wires from the jack are greatly reduced and as the disconnecting of these Wires is a matter which has caused considerable trouble in the those skilled in the art.

In F ig. 5 I have shown a slightly modified form of the invention which is used in what is known as a single circuit apparatus. In this instance, there are but tivo spring meinbers numbered respectively 18 and 19. They are secured to the jack frame 2O in a manner similar to that shown in'Fig. These tivo springs have their terminal ends stamped in a manner so as to be curved in opposite directions each to one side of the longitudinal center of the device. The extreme free ends of these spring members are cupped similar to the end 17 of the other form of the invention shoivn and described.

in Fig. (j i` have shown a fi'ontfelevation of a still further modifiedy form" of the invention which is adapted foruse in What known as a double circuit apparatus. In this instance four spring members 21 are securedv in the usualfmanner to the jack frame 2Q.. They are arranged'so that the upper and lower ones are fashioned similar to the spring members 18 and 19, being directed to-l ward opposite sides of the jack, while the two intermediate `springs are respectively on opposite sides of the longitudinal center of the device, but in longitudinal alignment with the side ledges respectively; thereof. A fantail terminal is thusformed onthe jack. The ends of these spring :members are, of course, cupped in the manner hereabove described in connectionwiththefirst mentioned form. *l y y I have slioivn several lforms of thev i1i`v`en tion but it is.` of course, un'derstoodthat the principle of theinvention is common to all forms, the showing being made merely to illustrate the various forms of jacks used in different circuits, As stated, the fantail effect is true in all forms and the ends of all ofthe spring members are cupped `for the specific purpose described.

From the foregoing description of the construction of my improved apparatus, it will be seen that i haveIprovided a simple, inexpensive and eiiicientmeans forcarrying out the objects of the invention.

While l Vhave particularly described the elements best adapted to perform thefunctions set forth, itis obvious that various changes in form, proportion, and in the minoil details of construction may be resorted to, Without departing from the spirit or sacrificing any o f the principles ofthe invention. l y

Having thus described my invention, what I claimis 1. in a spring jack of the class described comprising a jacli` frame land a plurality of contact springs supported therconin -'spaced relation, said springs for the greater portion Vof their length beingl in longitudinal alignment with said frame and the innerends of said springs being cut arcuately todispose the same on opposite sides of the longitudinal centers of said springs and provides substantially a fantail design.

2. In a spring jack of the class described comprising a jack frame and a plurality of Contact springs supported thereon in spaced relation, said springs for the greater pon tion of their length being in longitudinal alignment with said frame and having their inner ends cut arouately Certain of said ends projecting to one side of the longitudinal centers of said springs and other 0f said ends projecting to the opposite side thereo1c to various degrees providing substantially a fantail design, the end edges olf said ends being in the same transverse plane.

ln testimony whereof l a'liix my signature.

MAX HIRSCH. 

